Many of the RRS soundings at 00 UTC 6 February 2011 from the Northeast US appeared to have problems. There were many smal layers aloft with super-adiabatic lapse rates - too many to show them all. I've posted three soundings above (from the Univ. of Wyoming upper-air page).
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Albany data (top) have a super layer just above 700 mb and a deep layer below that exhibits absolute, moist instability. An unstable layer was definitely present, since the observations indicated thunder and snow and graupel and/or hail.
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The data at Pittsburgh (middle) indicate a VERY low tropopause - I can't rule this out - but the sounding seems very strange wrt all of its neighbors.
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Sterling (bottom) has a number of shallow super layers aloft, a layer below 700 mb with noise in the RH data, and then extremely low depoints for rest of sounding above 700 mb.
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No need to ask where the most interesting weather in the country was last evening!
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